Pressure testing issues for the pipeline downstream of the safety valve
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Is it necessary to perform a pressure test on the pipeline downstream of the safety valve with a bypass on the LPG vaporizer? Strength test or airtightness test? The set opening pressure of the safety valve is 1.76 MPa
If the piping behind the safety valve is used for combined discharge, backpressure becomes an issue; generally, the backpressure is 10% of the discharge pressure. The design pressure of the discharge pipes should be determined based on this value. Such pipes need to undergo pressure tests and integrity tests, otherwise problems may arise elsewhere when backpressure is present
The pipeline behind the safety valve also has a design pressure. A gas-tightness test should be carried out based on this design pressure.
But how should the wall thickness of the pipeline downstream be designed? Only consider pressure, not strength?